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UNITED STATES PATENT OFFICE.

CARL AUGUST GOTTLIEB SCHMIDT, OF LANGENSALZA, PRUSSIA, GERMANY DYE-VAT.

SYECIFICA'IION forming part of Letters Patent No. 425,703, dated. April 15, 1890.

To ctZZ whom it may concern:

Be it known that I, CARL AUGUST GOTT- LIEB SCHMIDT, of Langensalza, Germany, have invented an Improved Dyeing Apparatus, of which the following is a specification.

This invention relates to a dyeing apparatus of improved construction; and it consists in the various features of improvement more fully pointed out in the claim.

In the accompanying drawings, Figure 1 is a vertical central section of my improved dyeing apparatus. Fig. 2 is a horizontal section on line 00 on, Fig. 1. Fig. 3 is a vertical central section of a modification on line .2 z, Fig. 4; Fig. 4, a horizontal section on line y y, Fig. 3; and Fig. 5, a'sectional elevation of a modification of vessel 1).

With particular reference to Figs. 1 and 2, the letter 60 represents an outer vessel, within which is secured an inner vessel b in such a manner that a circulating-space remains be tween the two bottoms and also between the two walls of the vessels. The bottom of the vessel b is perforated, as shown. Through the vessel 1) there passes a shaft 0, receiving motion. by bevel-gear or otherwise and journaled in the bottom of vessel or. To this shaft there is secured between the two bottoms of vessels a b a fan-wheel d. The wings of this fanwheel extend outwardly radially from the center and revolve in a plane parallel to the two bottoms between which they are confined. The wings are preferably curved, as shown, and are of alength to reach about to the edge of vessel 1). At the upper edge the vessel a may be turned inward to guide the liquid into vessel 6.

In use the textile or other fabric to be dyed, blued, sized, bleached, washed, or otherwise treated is placed into the inner vessel, the dyeing-liquid is admitted through a pipe 6 into the apparatus, and the fan-wheel is set in motion. By the revolution of the fan-wheel the liquid between the wings of the same will Application filed June 11, 1888. Serial No. 276,718. (No model.)

be thrown outwardly, and thus a vacuum will be created around the shaft within the wheel. This vacuum does not only permit the liquid to percolate through the contents of vessel 1), but it will with great force suck the liquid down through such contents. After the liquid has been thus drawn down a second function will be performed by the fan-wheel. By

throwing the liquid forcibly out-ward it will cause the same to rise between the vessels at b and to overflow into vessel 1), thus completing the circulation. Thus it will be seen that the textile fabric is subjected to a continuous active circulation produced without the use of any heat or without the use of any pumps, tubes, connections, valves, or other intermediate mechanism.

In Figs. 3 and t I have shown a set or series of vessels-b placed within the outer vessel a in lieu of the single vessel shown in Fig. 1. In this modification each vessel 1) carries a funnel b at its top to guide the liquid. shaft of the ,.fan-wheel d is driven from below in lieu of being driven from above. The contents of vessel 1) may be separated or subdivided by one or more false bot-toms b such as shown in Fig. 5.

I claim as my invention- In a dyeing apparatus, the combination of an outer vessel awith an inner vessel 1), having a perforated bottom and of a size to form a circulating-space below and around vessel 1), a shaft passing into vessel a, and a fanwheel secured to such shaft between the bottoms of vessels at b, the wings of the fan-wheel extending radially outward from the center, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CARL AUGUST GOT'ILIEB SCHMIDT.

WVitnesses:

EDUARD PEITZ, B. R01.

The 

